节能日光温室中番茄灰霉病发生规律的研究

通过 3年对节能日光温室环境温湿度监测、病菌孢子捕捉和番茄灰霉病发生规律研究明确 ,一般年份 ,灰霉病在番茄叶片上表现为明显的始发期、盛发期和末发期等 3个阶段 ;果实发病后 ,即进入盛发期。温室中病菌的发生与病害呈正相关 ,病菌的高峰期较病害的高峰期提前10～15d。持续的低温、高湿、苗期带病等是引起番茄灰霉病发生的重要因子。提出要从优化设施环境等方面来控制番茄灰霉病的危害。

Studies on the epidemic regularities of tomato grey mould disease in energy-saving greenhouse

Tests of the epidemic regularity of tomato grey mould disease, monitoring of temperature and humidity in energy-saving greenhouse, and catching the spores in the field, were carried out in 1997-1999. Results demonstrated that the developement of the disease on the leaves could be divided in early stage, the peak stage, and late stage, in general years. The disease development got to the peak when the fruits were infected. There was a positive correlation between the pathogen of the field and the disease, the peak of the pathogen was earlier for 10-15 days than that of the disease. Persistent low temperature, high humidity and seedlings with disease were key factors affecting the disease development. Therefore, it was suggested that to control the tomato grey mould disease, the environmental condition would be improved.